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Contactless payment systems
It allows you to detect not only the volume of the sound but also the identification of characteristic sound source
The adder logic
It adopts 7-stage pipeline architecture
USB To TTL Module Voice Contactless payment systemsIntroduction : USB To TTL Module integrated with PL2303 IC from which is a single chip USB to UART bridge IC. You can use it to connect some serial device to your PC via USB port. This USB to UART bridge controller provides a simple solution to update the design of the RS 232 using minimal components and PCB space. Features : 3. 3V and 5. 0V outputs are available to power your project directly from the adapter. Compatible with 32 bit & 64 bit Windows,
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